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Continuing Education — "The Action Level!®"

VOLUME 10(5), May 2013
Journal of Occupational and Environmental Hygiene


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CASE STUDIES:

Comparison of the DiSCmini Aerosol Monitor to a Handheld Condensation Particle Counter and a Scanning Mobility Particle Sizer for Submicrometer Sodium Chloride and Metal Aerosols
Jessica B. Mills, Jae Hong Park and Thomas M. Peters

1. Welding fume particles are typically monodispersed. True or False?

True
False
2. A condensation particle counter measures _____________.
a. Surface area concentration
b. Number concentration
c. Particle size
d. both a and c
Predicting the Chemical Protection Factor of CBRN Protective Garments
Davide Ambesi, Richard Bouma, Emiel den Hartog and Chris R. Kleijn

3. For current CBRN clothing, a filter consisting of a single layer
    of small activated carbon particles is embedded in the garment
    in order to filter out hazardous gases from the air. The protective
    efficiency of such a filter depends, among other things, on the
    size of the carbon particles and the porosity of the filter. Which
    filter has the best protective properties?

a. 100 micron particles, 40% porosity
b. 10 micron particles, 40% porosity
c. 10 micro particles, 80% porosity
d. 1 micro particle, 80% porosity
4. Nowadays CBRN protective clothing, a filter consisting of a
    single layer of small activated carbon particles, is embedded
    in the garment in order to filter out hazardous gases from the air.
    The protective efficiency of such a filter depends, among other
    things, on the pattern in which the particles have been arranged.
    At given particle size and porosity, a hexagonal pattern has
    significantly better protective properties than a square pattern.
    True or False?
True
False
Bias Sources and Corrections in TEOM Technology
S.J. Page

5. It has been reported for decades by the manufacturer that
    the total mass of the TEOM system is implicitly contained in
    and characterized by the starting frequency, fo, and that any
    subsequent frequency ff is dependent only on mass collection
    on the filter. An unbiased mass measurement is independent
    of fo. True or False?

True
False
6. Given that the TEOM manufacturer's specification of oscillation
    amplitude A is 1.0 ± 0.2 mm, an exact theoretical description
    using an average deviation of 0.05 mm in A demonstrates a
    significant bias impact of variations in A. True or False?
True
False
Effect of Clothing Layers in Combination with Firefighting Personal Protective Clothing on Physiological and Perceptual Responses to Intermittent Work and on Materials Performance Test Results
Denise L. Smith, Jeannie M. Haller, Eric M. Hultquist, Wesley K. Lefferts and Patricia C. Fehling

7. The material performance test that reflects the tolerance time
    of human skin to a second degree burn is called:

a. Total Heat Loss
b. Intrinsic Thermal Resistance
c. Thermal Protective Performance
d. None of the above
8. The additional layer of clothing in the COT+SU configuration
    contributed to:
a. An increase in Thermal Protective Performance
b. A decrease in Thermal Protective Performance
c. No change in Thermal Protective Performance
Cardiopulmonary Fitness and Respirator Clearance: An Update
Sheri Belafsky, Justin Vlach and Stephen A. McCurdy

9. There is consensus on how best to medically clear workers
    who wear respirators. True or False?

True
False
10. All of the following are established risk factors for heart disease
      EXCEPT:
a. Age
b. Gender
c. Smoking
d. History of pneumonia
e. Diabetes
Lead Concentrations and Labeling of New Paint in Cameroon
P. Gottesfeld, G. Kuepouo, S. Tetsopgang and K. Durand

11. What kinds of paint are the most likely to contain lead
      pigments and driers?

a. oil-based paints
b. water-based paints
c. rainbow colored paints
12. Paints are dried before being tested for lead content to
      remove the volatile portion. True or False?
True
False

Be sure FULL NAME and EMAIL information are provided at the top of this page before submitting your answers.


Deadline for answers is May 31, 2013.

Answers will be available online at
http://www.acgih.org/products/joeh/alanswers.htm
on June 17, 2013.

 
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